Annoying friends

I'm so mad right now, I could go over to my friends house and just slap her across the face.
Well she's not really my friend anymore, after she started gossiping about me I ditched her sorry add.
But she knew that I had a Mibba account, but she also knew how self concious I am about my writing, and how I don't like to show people I know my stories, so what does she do?
SHE SHOWS PEOPLE MY FOOKING STORIES!
So now I have god only knows how many people who have read my work, that I don't want to. I barely know the people she's shown, I don't know if I can trust them!
This is so annoying.
Anyone else been backstabbed like this?